Check Punnett Square Packet

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Check Punnett Square Packet

• Genetics Test 5/1

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Cross Heterozygous Tongue Rolling dad x
non-roller mom
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r
r
R
Rr
Rr
r
rr
rr
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Cross non-roller dad x non-roller mom
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r
r
r
rr
rr
r
rr
rr
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Cross Heterozygous No Peak Dad x Widows peak
mom
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W
w
Ww
ww
w
Ww
ww
w
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Cross Homozygous Tongue Rolling dad x non-roller
mom
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r
r
R
Rr
Rr
R
Rr
Rr
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Make your own cross
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Cross Homozygous Dark guinea pig x light guinea
pig
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d
d
D
Dd
Dd
D
Dd
Dd
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Cross Pick any two from the previous cross- all
were heterozygous (Dd)
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D
d
D
DD
Dd
d
Dd
dd
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Cross Heterozygous Guinea x Homozygous
recessive Guinea
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D
d
d
Dd
dd
d
Dd
dd
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(No Transcript)
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Quickness- recessive (q)Slowness- dominant
(Q)Quick Genotype- qq (homozygous
recessive)Slow Genotypes- Qq- Heterozygous
QQ- Homozygous dominant
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For each genotype, give the phenotype for tongue
rolling. R rolling, r non roller
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Give an example of each genotype using letters
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Dihybrid Cross Independent Assortment
Heterozygous Curly tailed, straight eared
female x Straight tail, heterozygous floppy ear
male
Curly Tails (T) Floppy ears (F) Straight tails
(t) Straight ears (f)
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Tf
tf
tF
TtFf
ttFf
tf
Ttff
ttff
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Dihybrid Crosses- Independent assortment
When you cross two individuals, heterozygous for
each trait- ex. TtFf x TtFf Will always use 16
boxes Will always have a phenotypic ratio of
9331
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Other Types of Inheritance
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Incomplete Dominance- Blending of TraitsOne
allele is NOT dominant over anotherHeterozygous
individual shows a blending of traits
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Example of Incomplete Dominance
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Cross Pink Flowered Plant x White Flowered Plant
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R
W
W
RW
WW
W
RW
WW
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Homework
Due Monday- Mendel Packet 5/1- Genetics Test